736 EXPERIMENT STATION RECORD. 



Fertilizers for hops, W. Czermak (Illiis. Lundw. Ztg., 34 (1914), No. 24, pp. 

 239, 24O). — Experiments conducted during 1911-1913 in Poseu in which equal 

 quantities of potash and superphosphates were applied, and ammonium sulphate 

 in ratios of 1, 2, 3, and 4, showed an increased yield of hops with each increase 

 of the ammoniacal fertilizer. 



The kapok tree, A. Zimmeemann (Pflanzer, 10 (1914), No. 3, pp. 123-133).— 

 This article gives a botanical, cultural, and industrial discussion of Ceiha 

 pentandra. 



Botanical origin and usefulness of kapok fiber, Gebtrud Tobler-Wolff 

 (Pflanzer, 10 (1914), No. 4, pp. 171-175). — This article includes a description of 

 the kapok tree and its fiber. Among the uses to which this fiber has been put 

 are mentioned the manufacture of paper, guncotton, fuses, tassels, fringes, and 

 hats. 



Market conditions of kapok, F. Tobler (Pflanzer, 10 (1914), No. 4, 2)P- 175- 

 180). — This article gives the exports of this fiber from Java as increasing 

 from 5,750,000 kg. in 1906 to about 10,000,000 kg. in 1911. The market classifica- 

 tion given comprises " extra clean," " good clean," and " clean." 



Valuations are given for the markets of Java, Calcutta, Bombay, Ceylon, 

 Philippines, Ecuador, Venezuela, Mexico, and Togo, which range from 100 to 

 170 marks per 100 kg. (10.4 to 17.8 cts. per pound). 



Potato development work in Wisconsin (Wis, Potato Groivers Assoc. Bui., 

 1914, pp. 62, figs. 46). — This bulletin gives reports on the progress of potato 

 growing in the several sections of Wisconsin by difi'erent authors; the minutes 

 of the 1913 meeting of the Wisconsin Potato Growers Association ; and a sum- 

 mary of important addresses and papers presented at that meeting, with a plan 

 of potato seed insiiection for Wisconsin in 1914. 



Potato storage work in Bihar and Orissa in 1912, E. J. Woodhouse and 

 H. L. DtTTT (Agr. Jour. Bihar and Orissa [India], 1 (1913), No. 2, pp. 115-137, 

 pi. 1). — This article notes the success of storing potatoes under a layer of sand 

 to prevent the damage of the potato moth. 



Report of the Hmawbi Agricultural Station for the year 1912-13, A. 

 McKebrax (Rpt. Hmawbi [India'] Agr. Sta., 1912-13, pp. 8). — This report gives 

 i-esults of variety, cultural, and manurial tests with rice. 



Variety test with stock beets, K. von Rumker, J. Alexandrowitsch, et al. 

 (Lo/Mw. Jahrh. 45 (1913), No. 4, pp. 503-596, figs. 6). — Yields of dry matter 

 and of sugar in numerous experiments with a large number of varieties are 

 reported. Considerable space is also given to methods of computing compara- 

 tive values. 



The influence of fertilizers on the mineral and sugar content of beets, D. 

 Meyer (Illus. Landio. Ztg., 34 (1914), No. 8, pp. 59-61). — Some results of experi- 

 ments at Halle are noted in which a complete fertilizer seemed to more than 

 double the potash content of sugar beets, while the tops were considerably 

 richer in potash than the tops of stock beets. Stock beets were shown to store 

 large quantities of sodium in the roots, while the sodium of the sugar beets 

 was found almo.st entirely in the tops. Chloriu was found in very small quan- 

 tity in the roots of sugar beets while much was stored in the tops. The stock 

 beet roots contained about 10 times as much chloriu as did the sugar beet 

 roots, and the tops also contained more than the tops of the sugar beets. The 

 ash content was found to be higher in the stock beets. The above-mentioned 

 differences are attributed to the results of selection and breeding. 



Among the effects of different fertilizer elements noted are that no noticeable 

 increase of potash in beet roots through fertilization by potash or by barn- 

 yard manure had been observed, but large quantities have been found stored in 



